3.25.4 html 1068 733 1 false 307 0 false 19 false false R1.htm 0000001 - Document - Cover Sheet http://www.bauschhealth.com/role/Cover Cover Cover 1 false false R2.htm 0000002 - Document - AUDIT INFORMATION Sheet http://www.bauschhealth.com/role/AUDITINFORMATION AUDIT INFORMATION Cover 2 false false R3.htm 9952151 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.bauschhealth.com/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 3 false false R4.htm 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.bauschhealth.com/role/CONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 4 false false R5.htm 9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://www.bauschhealth.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS CONSOLIDATED STATEMENTS OF OPERATIONS Statements 5 false false R6.htm 9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Sheet http://www.bauschhealth.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMELOSS CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Statements 6 false false R7.htm 9952155 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS??? EQUITY (DEFICIT) Sheet http://www.bauschhealth.com/role/CONSOLIDATEDSTATEMENTSOFSHAREHOLDERSEQUITYDEFICIT CONSOLIDATED STATEMENTS OF SHAREHOLDERS??? EQUITY (DEFICIT) Statements 7 false false R8.htm 9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.bauschhealth.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 8 false false R9.htm 9952157 - Disclosure - DESCRIPTION OF BUSINESS Sheet http://www.bauschhealth.com/role/DESCRIPTIONOFBUSINESS DESCRIPTION OF BUSINESS Notes 9 false false R10.htm 9952158 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIES SIGNIFICANT ACCOUNTING POLICIES Notes 10 false false R11.htm 9952159 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONS LICENSING AGREEMENTS AND ACQUISITIONS Notes 11 false false R12.htm 9952160 - Disclosure - RESTRUCTURING, INTEGRATION AND SEPARATION COSTS Sheet http://www.bauschhealth.com/role/RESTRUCTURINGINTEGRATIONANDSEPARATIONCOSTS RESTRUCTURING, INTEGRATION AND SEPARATION COSTS Notes 12 false false R13.htm 9952161 - Disclosure - FAIR VALUE MEASUREMENTS Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTS FAIR VALUE MEASUREMENTS Notes 13 false false R14.htm 9952162 - Disclosure - INVENTORIES Sheet http://www.bauschhealth.com/role/INVENTORIES INVENTORIES Notes 14 false false R15.htm 9952163 - Disclosure - PROPERTY, PLANT AND EQUIPMENT Sheet http://www.bauschhealth.com/role/PROPERTYPLANTANDEQUIPMENT PROPERTY, PLANT AND EQUIPMENT Notes 15 false false R16.htm 9952164 - Disclosure - INTANGIBLE ASSETS AND GOODWILL Sheet http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILL INTANGIBLE ASSETS AND GOODWILL Notes 16 false false R17.htm 9952165 - Disclosure - ACCRUED AND OTHER CURRENT LIABILITIES Sheet http://www.bauschhealth.com/role/ACCRUEDANDOTHERCURRENTLIABILITIES ACCRUED AND OTHER CURRENT LIABILITIES Notes 17 false false R18.htm 9952166 - Disclosure - FINANCING ARRANGEMENTS Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTS FINANCING ARRANGEMENTS Notes 18 false false R19.htm 9952167 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANS PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS Notes 19 false false R20.htm 9952168 - Disclosure - LEASES Sheet http://www.bauschhealth.com/role/LEASES LEASES Notes 20 false false R21.htm 9952169 - Disclosure - SHARE-BASED COMPENSATION Sheet http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATION SHARE-BASED COMPENSATION Notes 21 false false R22.htm 9952170 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS Sheet http://www.bauschhealth.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSS ACCUMULATED OTHER COMPREHENSIVE LOSS Notes 22 false false R23.htm 9952171 - Disclosure - RESEARCH AND DEVELOPMENT Sheet http://www.bauschhealth.com/role/RESEARCHANDDEVELOPMENT RESEARCH AND DEVELOPMENT Notes 23 false false R24.htm 9952172 - Disclosure - OTHER EXPENSE, NET Sheet http://www.bauschhealth.com/role/OTHEREXPENSENET OTHER EXPENSE, NET Notes 24 false false R25.htm 9952173 - Disclosure - INCOME TAXES Sheet http://www.bauschhealth.com/role/INCOMETAXES INCOME TAXES Notes 25 false false R26.htm 9952174 - Disclosure - EARNINGS (LOSS) PER SHARE Sheet http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARE EARNINGS (LOSS) PER SHARE Notes 26 false false R27.htm 9952175 - Disclosure - SHAREHOLDER RIGHTS PLAN Sheet http://www.bauschhealth.com/role/SHAREHOLDERRIGHTSPLAN SHAREHOLDER RIGHTS PLAN Notes 27 false false R28.htm 9952176 - Disclosure - SUPPLEMENTAL CASH FLOW DISCLOSURES Sheet http://www.bauschhealth.com/role/SUPPLEMENTALCASHFLOWDISCLOSURES SUPPLEMENTAL CASH FLOW DISCLOSURES Notes 28 false false R29.htm 9952177 - Disclosure - LEGAL PROCEEDINGS Sheet http://www.bauschhealth.com/role/LEGALPROCEEDINGS LEGAL PROCEEDINGS Notes 29 false false R30.htm 9952178 - Disclosure - COMMITMENTS AND CONTINGENCIES Sheet http://www.bauschhealth.com/role/COMMITMENTSANDCONTINGENCIES COMMITMENTS AND CONTINGENCIES Notes 30 false false R31.htm 9952179 - Disclosure - SEGMENT INFORMATION Sheet http://www.bauschhealth.com/role/SEGMENTINFORMATION SEGMENT INFORMATION Notes 31 false false R32.htm 9952180 - Disclosure - SUBSEQUENT EVENT Sheet http://www.bauschhealth.com/role/SUBSEQUENTEVENT SUBSEQUENT EVENT Notes 32 false false R33.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 33 false false R34.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 34 false false R35.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Notes 35 false false R36.htm 9955511 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies SIGNIFICANT ACCOUNTING POLICIES (Policies) Policies 36 false false R37.htm 9955512 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESTables SIGNIFICANT ACCOUNTING POLICIES (Tables) Tables http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIES 37 false false R38.htm 9955513 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS (Tables) Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONSTables LICENSING AGREEMENTS AND ACQUISITIONS (Tables) Tables http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONS 38 false false R39.htm 9955514 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSTables FAIR VALUE MEASUREMENTS (Tables) Tables http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTS 39 false false R40.htm 9955515 - Disclosure - INVENTORIES (Tables) Sheet http://www.bauschhealth.com/role/INVENTORIESTables INVENTORIES (Tables) Tables http://www.bauschhealth.com/role/INVENTORIES 40 false false R41.htm 9955516 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables) Sheet http://www.bauschhealth.com/role/PROPERTYPLANTANDEQUIPMENTTables PROPERTY, PLANT AND EQUIPMENT (Tables) Tables http://www.bauschhealth.com/role/PROPERTYPLANTANDEQUIPMENT 41 false false R42.htm 9955517 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables) Sheet http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLTables INTANGIBLE ASSETS AND GOODWILL (Tables) Tables http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILL 42 false false R43.htm 9955518 - Disclosure - ACCRUED AND OTHER CURRENT LIABILITIES (Tables) Sheet http://www.bauschhealth.com/role/ACCRUEDANDOTHERCURRENTLIABILITIESTables ACCRUED AND OTHER CURRENT LIABILITIES (Tables) Tables http://www.bauschhealth.com/role/ACCRUEDANDOTHERCURRENTLIABILITIES 43 false false R44.htm 9955519 - Disclosure - FINANCING ARRANGEMENTS (Tables) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSTables FINANCING ARRANGEMENTS (Tables) Tables http://www.bauschhealth.com/role/FINANCINGARRANGEMENTS 44 false false R45.htm 9955520 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS (Tables) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSTables PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS (Tables) Tables http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANS 45 false false R46.htm 9955521 - Disclosure - LEASES (Tables) Sheet http://www.bauschhealth.com/role/LEASESTables LEASES (Tables) Tables http://www.bauschhealth.com/role/LEASES 46 false false R47.htm 9955522 - Disclosure - SHARE-BASED COMPENSATION (Tables) Sheet http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONTables SHARE-BASED COMPENSATION (Tables) Tables http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATION 47 false false R48.htm 9955523 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) Sheet http://www.bauschhealth.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSTables ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) Tables http://www.bauschhealth.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSS 48 false false R49.htm 9955524 - Disclosure - RESEARCH AND DEVELOPMENT (Tables) Sheet http://www.bauschhealth.com/role/RESEARCHANDDEVELOPMENTTables RESEARCH AND DEVELOPMENT (Tables) Tables http://www.bauschhealth.com/role/RESEARCHANDDEVELOPMENT 49 false false R50.htm 9955525 - Disclosure - OTHER EXPENSE, NET (Tables) Sheet http://www.bauschhealth.com/role/OTHEREXPENSENETTables OTHER EXPENSE, NET (Tables) Tables http://www.bauschhealth.com/role/OTHEREXPENSENET 50 false false R51.htm 9955526 - Disclosure - INCOME TAXES (Tables) Sheet http://www.bauschhealth.com/role/INCOMETAXESTables INCOME TAXES (Tables) Tables http://www.bauschhealth.com/role/INCOMETAXES 51 false false R52.htm 9955527 - Disclosure - EARNINGS (LOSS) PER SHARE (Tables) Sheet http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARETables EARNINGS (LOSS) PER SHARE (Tables) Tables http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARE 52 false false R53.htm 9955528 - Disclosure - SUPPLEMENTAL CASH FLOW DISCLOSURES (Tables) Sheet http://www.bauschhealth.com/role/SUPPLEMENTALCASHFLOWDISCLOSURESTables SUPPLEMENTAL CASH FLOW DISCLOSURES (Tables) Tables http://www.bauschhealth.com/role/SUPPLEMENTALCASHFLOWDISCLOSURES 53 false false R54.htm 9955529 - Disclosure - SEGMENT INFORMATION (Tables) Sheet http://www.bauschhealth.com/role/SEGMENTINFORMATIONTables SEGMENT INFORMATION (Tables) Tables http://www.bauschhealth.com/role/SEGMENTINFORMATION 54 false false R55.htm 9955530 - Disclosure - DESCRIPTION OF BUSINESS - Narrative (Details) Sheet http://www.bauschhealth.com/role/DESCRIPTIONOFBUSINESSNarrativeDetails DESCRIPTION OF BUSINESS - Narrative (Details) Details 55 false false R56.htm 9955531 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) Details 56 false false R57.htm 9955532 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents and Concentrations of Credit Risk (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESCashandCashEquivalentsandConcentrationsofCreditRiskDetails SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents and Concentrations of Credit Risk (Details) Details 57 false false R58.htm 9955533 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Activity in Allowance for Credit Losses (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESActivityinAllowanceforCreditLossesDetails SIGNIFICANT ACCOUNTING POLICIES - Activity in Allowance for Credit Losses (Details) Details 58 false false R59.htm 9955534 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Lives of Property, Plant and Equipment (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESEstimatedUsefulLivesofPropertyPlantandEquipmentDetails SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Lives of Property, Plant and Equipment (Details) Details 59 false false R60.htm 9955535 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Lives of Intangible Assets (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESEstimatedUsefulLivesofIntangibleAssetsDetails SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Lives of Intangible Assets (Details) Details 60 false false R61.htm 9955536 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Variable Consideration Provisions (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESVariableConsiderationProvisionsDetails SIGNIFICANT ACCOUNTING POLICIES - Variable Consideration Provisions (Details) Details 61 false false R62.htm 9955537 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESRevenueRecognitionDetails SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details) Details 62 false false R63.htm 9955538 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Leases (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESLeasesDetails SIGNIFICANT ACCOUNTING POLICIES - Leases (Details) Details 63 false false R64.htm 9955539 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Advertising Costs (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESAdvertisingCostsDetails SIGNIFICANT ACCOUNTING POLICIES - Advertising Costs (Details) Details 64 false false R65.htm 9955540 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Interest Expense (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESInterestExpenseDetails SIGNIFICANT ACCOUNTING POLICIES - Interest Expense (Details) Details 65 false false R66.htm 9955541 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Income Taxes (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESIncomeTaxesDetails SIGNIFICANT ACCOUNTING POLICIES - Income Taxes (Details) Details 66 false false R67.htm 9955542 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Employee Benefit Plans (Details) Sheet http://www.bauschhealth.com/role/SIGNIFICANTACCOUNTINGPOLICIESEmployeeBenefitPlansDetails SIGNIFICANT ACCOUNTING POLICIES - Employee Benefit Plans (Details) Details 67 false false R68.htm 9955543 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS - Narrative (Details) Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONSNarrativeDetails LICENSING AGREEMENTS AND ACQUISITIONS - Narrative (Details) Details 68 false false R69.htm 9955544 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS - Aggregate Acquisition Consideration (Details) Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONSAggregateAcquisitionConsiderationDetails LICENSING AGREEMENTS AND ACQUISITIONS - Aggregate Acquisition Consideration (Details) Details 69 false false R70.htm 9955545 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS - Assets Acquired and Liabilities Assumed (Details) Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONSAssetsAcquiredandLiabilitiesAssumedDetails LICENSING AGREEMENTS AND ACQUISITIONS - Assets Acquired and Liabilities Assumed (Details) Details 70 false false R71.htm 9955546 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS - Intangible Assets Acquired (Details) Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONSIntangibleAssetsAcquiredDetails LICENSING AGREEMENTS AND ACQUISITIONS - Intangible Assets Acquired (Details) Details 71 false false R72.htm 9955547 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS - Assets Acquired and Liabilities Assumed - Harmac (Details) Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONSAssetsAcquiredandLiabilitiesAssumedHarmacDetails LICENSING AGREEMENTS AND ACQUISITIONS - Assets Acquired and Liabilities Assumed - Harmac (Details) Details 72 false false R73.htm 9955548 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS - Pro Forma Information (Details) Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONSProFormaInformationDetails LICENSING AGREEMENTS AND ACQUISITIONS - Pro Forma Information (Details) Details 73 false false R74.htm 9955549 - Disclosure - LICENSING AGREEMENTS AND ACQUISITIONS - Intangible Assets Acquired, Asset Acquisition (Details) Sheet http://www.bauschhealth.com/role/LICENSINGAGREEMENTSANDACQUISITIONSIntangibleAssetsAcquiredAssetAcquisitionDetails LICENSING AGREEMENTS AND ACQUISITIONS - Intangible Assets Acquired, Asset Acquisition (Details) Details 74 false false R75.htm 9955550 - Disclosure - RESTRUCTURING, INTEGRATION AND SEPARATION COSTS (Details) Sheet http://www.bauschhealth.com/role/RESTRUCTURINGINTEGRATIONANDSEPARATIONCOSTSDetails RESTRUCTURING, INTEGRATION AND SEPARATION COSTS (Details) Details http://www.bauschhealth.com/role/RESTRUCTURINGINTEGRATIONANDSEPARATIONCOSTS 75 false false R76.htm 9955551 - Disclosure - FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) Details 76 false false R77.htm 9955552 - Disclosure - FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis, Narrative (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisNarrativeDetails FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis, Narrative (Details) Details 77 false false R78.htm 9955553 - Disclosure - FAIR VALUE MEASUREMENTS - Cross-currency Swaps, Narrative (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSCrosscurrencySwapsNarrativeDetails FAIR VALUE MEASUREMENTS - Cross-currency Swaps, Narrative (Details) Details 78 false false R79.htm 9955554 - Disclosure - FAIR VALUE MEASUREMENTS - Cross-currency Swaps Included in Consolidated Balance Sheets (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSCrosscurrencySwapsIncludedinConsolidatedBalanceSheetsDetails FAIR VALUE MEASUREMENTS - Cross-currency Swaps Included in Consolidated Balance Sheets (Details) Details 79 false false R80.htm 9955555 - Disclosure - FAIR VALUE MEASUREMENTS - Effect of Hedging Instruments on Financial Instruments (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSEffectofHedgingInstrumentsonFinancialInstrumentsDetails FAIR VALUE MEASUREMENTS - Effect of Hedging Instruments on Financial Instruments (Details) Details 80 false false R81.htm 9955556 - Disclosure - FAIR VALUE MEASUREMENTS - Foreign Currency Exchange Contracts, Narrative (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSForeignCurrencyExchangeContractsNarrativeDetails FAIR VALUE MEASUREMENTS - Foreign Currency Exchange Contracts, Narrative (Details) Details 81 false false R82.htm 9955557 - Disclosure - FAIR VALUE MEASUREMENTS - Foreign Exchange Contracts Included in Consolidated Balance Sheets (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSForeignExchangeContractsIncludedinConsolidatedBalanceSheetsDetails FAIR VALUE MEASUREMENTS - Foreign Exchange Contracts Included in Consolidated Balance Sheets (Details) Details 82 false false R83.htm 9955558 - Disclosure - FAIR VALUE MEASUREMENTS - Foreign Exchange Contracts Included on Consolidated Statements of Operations and Consolidated Statements of Cash Flows (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSForeignExchangeContractsIncludedonConsolidatedStatementsofOperationsandConsolidatedStatementsofCashFlowsDetails FAIR VALUE MEASUREMENTS - Foreign Exchange Contracts Included on Consolidated Statements of Operations and Consolidated Statements of Cash Flows (Details) Details 83 false false R84.htm 9955559 - Disclosure - FAIR VALUE MEASUREMENTS - Acquisition-related Contingent Consideration Obligations, Narrative (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSAcquisitionrelatedContingentConsiderationObligationsNarrativeDetails FAIR VALUE MEASUREMENTS - Acquisition-related Contingent Consideration Obligations, Narrative (Details) Details 84 false false R85.htm 9955560 - Disclosure - FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level3) (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisUsingSignificantUnobservableInputsLevel3Details FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level3) (Details) Details 85 false false R86.htm 9955561 - Disclosure - FAIR VALUE MEASUREMENTS - Fair Value of Long-term Debt, Narrative (Details) Sheet http://www.bauschhealth.com/role/FAIRVALUEMEASUREMENTSFairValueofLongtermDebtNarrativeDetails FAIR VALUE MEASUREMENTS - Fair Value of Long-term Debt, Narrative (Details) Details 86 false false R87.htm 9955562 - Disclosure - INVENTORIES - Components of Inventories (Details) Sheet http://www.bauschhealth.com/role/INVENTORIESComponentsofInventoriesDetails INVENTORIES - Components of Inventories (Details) Details 87 false false R88.htm 9955563 - Disclosure - PROPERTY, PLANT AND EQUIPMENT - Property, Plant and Equipment (Details) Sheet http://www.bauschhealth.com/role/PROPERTYPLANTANDEQUIPMENTPropertyPlantandEquipmentDetails PROPERTY, PLANT AND EQUIPMENT - Property, Plant and Equipment (Details) Details 88 false false R89.htm 9955564 - Disclosure - PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) Sheet http://www.bauschhealth.com/role/PROPERTYPLANTANDEQUIPMENTNarrativeDetails PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) Details 89 false false R90.htm 9955565 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Finite and Indefinite-Lived Intangible Assets (Details) Sheet http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLFiniteandIndefiniteLivedIntangibleAssetsDetails INTANGIBLE ASSETS AND GOODWILL - Finite and Indefinite-Lived Intangible Assets (Details) Details 90 false false R91.htm 9955566 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) Sheet http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLNarrativeDetails INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) Details 91 false false R92.htm 9955567 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Amortization Expense (Details) Sheet http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLAmortizationExpenseDetails INTANGIBLE ASSETS AND GOODWILL - Amortization Expense (Details) Details 92 false false R93.htm 9955568 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Changes in the Carrying Amount of Goodwill (Details) Sheet http://www.bauschhealth.com/role/INTANGIBLEASSETSANDGOODWILLChangesintheCarryingAmountofGoodwillDetails INTANGIBLE ASSETS AND GOODWILL - Changes in the Carrying Amount of Goodwill (Details) Details 93 false false R94.htm 9955569 - Disclosure - ACCRUED AND OTHER CURRENT LIABILITIES (Details) Sheet http://www.bauschhealth.com/role/ACCRUEDANDOTHERCURRENTLIABILITIESDetails ACCRUED AND OTHER CURRENT LIABILITIES (Details) Details http://www.bauschhealth.com/role/ACCRUEDANDOTHERCURRENTLIABILITIESTables 94 false false R95.htm 9955570 - Disclosure - FINANCING ARRANGEMENTS - Long-Term Debt (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSLongTermDebtDetails FINANCING ARRANGEMENTS - Long-Term Debt (Details) Details 95 false false R96.htm 9955571 - Disclosure - FINANCING ARRANGEMENTS - April 2025 Refinancing Transactions and Bridge Facility (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSApril2025RefinancingTransactionsandBridgeFacilityDetails FINANCING ARRANGEMENTS - April 2025 Refinancing Transactions and Bridge Facility (Details) Details 96 false false R97.htm 9955572 - Disclosure - FINANCING ARRANGEMENTS - Aggregate Principal Amounts of Term Loan B Facility and Redeemed Notes (Details) Notes http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSAggregatePrincipalAmountsofTermLoanBFacilityandRedeemedNotesDetails FINANCING ARRANGEMENTS - Aggregate Principal Amounts of Term Loan B Facility and Redeemed Notes (Details) Details 97 false false R98.htm 9955573 - Disclosure - FINANCING ARRANGEMENTS - December 2025 Exchange (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSDecember2025ExchangeDetails FINANCING ARRANGEMENTS - December 2025 Exchange (Details) Details 98 false false R99.htm 9955574 - Disclosure - FINANCING ARRANGEMENTS - Accounts Receivable Credit Facility (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSAccountsReceivableCreditFacilityDetails FINANCING ARRANGEMENTS - Accounts Receivable Credit Facility (Details) Details 99 false false R100.htm 9955575 - Disclosure - FINANCING ARRANGEMENTS - Bridge Facility (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSBridgeFacilityDetails FINANCING ARRANGEMENTS - Bridge Facility (Details) Details 100 false false R101.htm 9955576 - Disclosure - FINANCING ARRANGEMENTS - Credit Facilities (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSCreditFacilitiesDetails FINANCING ARRANGEMENTS - Credit Facilities (Details) Details 101 false false R102.htm 9955577 - Disclosure - FINANCING ARRANGEMENTS - B+L Senior Secured Credit Facilities (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSBLSeniorSecuredCreditFacilitiesDetails FINANCING ARRANGEMENTS - B+L Senior Secured Credit Facilities (Details) Details 102 false false R103.htm 9955578 - Disclosure - FINANCING ARRANGEMENTS - 2025 Refinancing Activity (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTS2025RefinancingActivityDetails FINANCING ARRANGEMENTS - 2025 Refinancing Activity (Details) Details 103 false false R104.htm 9955579 - Disclosure - FINANCING ARRANGEMENTS - Senior Secured Notes (Details) Notes http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSSeniorSecuredNotesDetails FINANCING ARRANGEMENTS - Senior Secured Notes (Details) Details 104 false false R105.htm 9955580 - Disclosure - FINANCING ARRANGEMENTS - Senior Unsecured Notes (Details) Notes http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSSeniorUnsecuredNotesDetails FINANCING ARRANGEMENTS - Senior Unsecured Notes (Details) Details 105 false false R106.htm 9955581 - Disclosure - FINANCING ARRANGEMENTS - 2022 Exchange (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTS2022ExchangeDetails FINANCING ARRANGEMENTS - 2022 Exchange (Details) Details 106 false false R107.htm 9955582 - Disclosure - FINANCING ARRANGEMENTS - Weighted Average Stated Rate of Interest (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSWeightedAverageStatedRateofInterestDetails FINANCING ARRANGEMENTS - Weighted Average Stated Rate of Interest (Details) Details 107 false false R108.htm 9955583 - Disclosure - FINANCING ARRANGEMENTS - Gain on Extinguishment of Debt (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSGainonExtinguishmentofDebtDetails FINANCING ARRANGEMENTS - Gain on Extinguishment of Debt (Details) Details 108 false false R109.htm 9955584 - Disclosure - FINANCING ARRANGEMENTS - Aggregate Maturities of Long-Term Debt (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSAggregateMaturitiesofLongTermDebtDetails FINANCING ARRANGEMENTS - Aggregate Maturities of Long-Term Debt (Details) Details 109 false false R110.htm 9955585 - Disclosure - FINANCING ARRANGEMENTS - January 2026 Refinancing Activity (Details) Sheet http://www.bauschhealth.com/role/FINANCINGARRANGEMENTSJanuary2026RefinancingActivityDetails FINANCING ARRANGEMENTS - January 2026 Refinancing Activity (Details) Details 110 false false R111.htm 9955586 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Narrative (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSNarrativeDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Narrative (Details) Details http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSTables 111 false false R112.htm 9955587 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSAmountsRecognizedinAccumulatedOtherComprehensiveLossDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) Details 112 false false R113.htm 9955588 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit Cost (Benefit) (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSComponentsofNetPeriodicBenefitCostBenefitDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit Cost (Benefit) (Details) Details 113 false false R114.htm 9955589 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Change in Benefit Obligation, Plan Assets and Funded Status (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSChangeinBenefitObligationPlanAssetsandFundedStatusDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Change in Benefit Obligation, Plan Assets and Funded Status (Details) Details 114 false false R115.htm 9955590 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Underfunded Plans (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSUnderfundedPlansDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Underfunded Plans (Details) Details 115 false false R116.htm 9955591 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Future Benefit Payments for the Pension Benefit Plans (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSFutureBenefitPaymentsforthePensionBenefitPlansDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Future Benefit Payments for the Pension Benefit Plans (Details) Details 116 false false R117.htm 9955592 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Weighted-Average Assumptions Used to Determine Net Periodic Benefit Costs and Benefit Obligations (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSWeightedAverageAssumptionsUsedtoDetermineNetPeriodicBenefitCostsandBenefitObligationsDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Weighted-Average Assumptions Used to Determine Net Periodic Benefit Costs and Benefit Obligations (Details) Details 117 false false R118.htm 9955593 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Actual Asset Allocations (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSActualAssetAllocationsDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Actual Asset Allocations (Details) Details 118 false false R119.htm 9955594 - Disclosure - PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Fair Value of Pension and Postretirement Benefit Plan Assets Assumed in Connection with the Acquisition (Details) Sheet http://www.bauschhealth.com/role/PENSIONANDPOSTRETIREMENTEMPLOYEEBENEFITPLANSFairValueofPensionandPostretirementBenefitPlanAssetsAssumedinConnectionwiththeAcquisitionDetails PENSION AND POSTRETIREMENT EMPLOYEE BENEFIT PLANS - Fair Value of Pension and Postretirement Benefit Plan Assets Assumed in Connection with the Acquisition (Details) Details 119 false false R120.htm 9955595 - Disclosure - LEASES - Narrative (Details) Sheet http://www.bauschhealth.com/role/LEASESNarrativeDetails LEASES - Narrative (Details) Details 120 false false R121.htm 9955596 - Disclosure - LEASES - Right-of-use Assets and Right-of-use Liabilities (Details) Sheet http://www.bauschhealth.com/role/LEASESRightofuseAssetsandRightofuseLiabilitiesDetails LEASES - Right-of-use Assets and Right-of-use Liabilities (Details) Details 121 false false R122.htm 9955597 - Disclosure - LEASES - Lease Expenses (Details) Sheet http://www.bauschhealth.com/role/LEASESLeaseExpensesDetails LEASES - Lease Expenses (Details) Details 122 false false R123.htm 9955598 - Disclosure - LEASES - Other Operating Lease Information (Details) Sheet http://www.bauschhealth.com/role/LEASESOtherOperatingLeaseInformationDetails LEASES - Other Operating Lease Information (Details) Details 123 false false R124.htm 9955599 - Disclosure - LEASES - Operating Lease Future Payments (Details) Sheet http://www.bauschhealth.com/role/LEASESOperatingLeaseFuturePaymentsDetails LEASES - Operating Lease Future Payments (Details) Details 124 false false R125.htm 9955600 - Disclosure - SHARE-BASED COMPENSATION - Narrative (Details) Sheet http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONNarrativeDetails SHARE-BASED COMPENSATION - Narrative (Details) Details 125 false false R126.htm 9955601 - Disclosure - SHARE-BASED COMPENSATION - Share-based Compensation Expense (Details) Sheet http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONSharebasedCompensationExpenseDetails SHARE-BASED COMPENSATION - Share-based Compensation Expense (Details) Details 126 false false R127.htm 9955602 - Disclosure - SHARE-BASED COMPENSATION - Stock Options (Details) Sheet http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONStockOptionsDetails SHARE-BASED COMPENSATION - Stock Options (Details) Details 127 false false R128.htm 9955603 - Disclosure - SHARE-BASED COMPENSATION - RSUs (Details) Sheet http://www.bauschhealth.com/role/SHAREBASEDCOMPENSATIONRSUsDetails SHARE-BASED COMPENSATION - RSUs (Details) Details 128 false false R129.htm 9955604 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS - Accumulated Other Comprehensive Loss (Details) Sheet http://www.bauschhealth.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSAccumulatedOtherComprehensiveLossDetails ACCUMULATED OTHER COMPREHENSIVE LOSS - Accumulated Other Comprehensive Loss (Details) Details 129 false false R130.htm 9955605 - Disclosure - RESEARCH AND DEVELOPMENT - Research and Development Costs (Details) Sheet http://www.bauschhealth.com/role/RESEARCHANDDEVELOPMENTResearchandDevelopmentCostsDetails RESEARCH AND DEVELOPMENT - Research and Development Costs (Details) Details 130 false false R131.htm 9955606 - Disclosure - OTHER EXPENSE, NET - Other Expense, Net (Details) Sheet http://www.bauschhealth.com/role/OTHEREXPENSENETOtherExpenseNetDetails OTHER EXPENSE, NET - Other Expense, Net (Details) Details 131 false false R132.htm 9955607 - Disclosure - OTHER EXPENSE, NET - Narrative (Details) Sheet http://www.bauschhealth.com/role/OTHEREXPENSENETNarrativeDetails OTHER EXPENSE, NET - Narrative (Details) Details 132 false false R133.htm 9955608 - Disclosure - INCOME TAXES - Components of Income (Loss) From Income Taxes (Details) Sheet http://www.bauschhealth.com/role/INCOMETAXESComponentsofIncomeLossFromIncomeTaxesDetails INCOME TAXES - Components of Income (Loss) From Income Taxes (Details) Details 133 false false R134.htm 9955609 - Disclosure - INCOME TAXES - Effective Income Tax Reconciliation (Details) Sheet http://www.bauschhealth.com/role/INCOMETAXESEffectiveIncomeTaxReconciliationDetails INCOME TAXES - Effective Income Tax Reconciliation (Details) Details 134 false false R135.htm 9955610 - Disclosure - INCOME TAXES - Tax Effect of Major Items Recorded as Deferred Tax Assets and Liabilities (Details) Sheet http://www.bauschhealth.com/role/INCOMETAXESTaxEffectofMajorItemsRecordedasDeferredTaxAssetsandLiabilitiesDetails INCOME TAXES - Tax Effect of Major Items Recorded as Deferred Tax Assets and Liabilities (Details) Details 135 false false R136.htm 9955611 - Disclosure - INCOME TAXES - Reconciliation of Deferred Tax Asset Valuation Allowance (Details) Sheet http://www.bauschhealth.com/role/INCOMETAXESReconciliationofDeferredTaxAssetValuationAllowanceDetails INCOME TAXES - Reconciliation of Deferred Tax Asset Valuation Allowance (Details) Details 136 false false R137.htm 9955612 - Disclosure - INCOME TAXES - Narrative (Details) Sheet http://www.bauschhealth.com/role/INCOMETAXESNarrativeDetails INCOME TAXES - Narrative (Details) Details 137 false false R138.htm 9955613 - Disclosure - INCOME TAXES - Reconciliation of Unrecognized Tax Benefits (Details) Sheet http://www.bauschhealth.com/role/INCOMETAXESReconciliationofUnrecognizedTaxBenefitsDetails INCOME TAXES - Reconciliation of Unrecognized Tax Benefits (Details) Details 138 false false R139.htm 9955614 - Disclosure - INCOME TAXES - Income Tax Paid Net (Details) Sheet http://www.bauschhealth.com/role/INCOMETAXESIncomeTaxPaidNetDetails INCOME TAXES - Income Tax Paid Net (Details) Details 139 false false R140.htm 9955615 - Disclosure - EARNINGS (LOSS) PER SHARE - Calculation of Loss Per Share (Details) Sheet http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARECalculationofLossPerShareDetails EARNINGS (LOSS) PER SHARE - Calculation of Loss Per Share (Details) Details http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARETables 140 false false R141.htm 9955616 - Disclosure - EARNINGS (LOSS) PER SHARE - Narrative (Details) Sheet http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARENarrativeDetails EARNINGS (LOSS) PER SHARE - Narrative (Details) Details http://www.bauschhealth.com/role/EARNINGSLOSSPERSHARETables 141 false false R142.htm 9955617 - Disclosure - SHAREHOLDER RIGHTS PLAN (Details) Sheet http://www.bauschhealth.com/role/SHAREHOLDERRIGHTSPLANDetails SHAREHOLDER RIGHTS PLAN (Details) Details http://www.bauschhealth.com/role/SHAREHOLDERRIGHTSPLAN 142 false false R143.htm 9955618 - Disclosure - SUPPLEMENTAL CASH FLOW DISCLOSURES - Supplemental Cash Flow Disclosures (Details) Sheet http://www.bauschhealth.com/role/SUPPLEMENTALCASHFLOWDISCLOSURESSupplementalCashFlowDisclosuresDetails SUPPLEMENTAL CASH FLOW DISCLOSURES - Supplemental Cash Flow Disclosures (Details) Details 143 false false R144.htm 9955619 - Disclosure - LEGAL PROCEEDINGS - Legal Proceeds (Details) Sheet http://www.bauschhealth.com/role/LEGALPROCEEDINGSLegalProceedsDetails LEGAL PROCEEDINGS - Legal Proceeds (Details) Details 144 false false R145.htm 9955620 - Disclosure - LEGAL PROCEEDINGS - Securities Litigation and Related Matters (Details) Sheet http://www.bauschhealth.com/role/LEGALPROCEEDINGSSecuritiesLitigationandRelatedMattersDetails LEGAL PROCEEDINGS - Securities Litigation and Related Matters (Details) Details 145 false false R146.htm 9955621 - Disclosure - LEGAL PROCEEDINGS - Antitrust Litigation (Details) Sheet http://www.bauschhealth.com/role/LEGALPROCEEDINGSAntitrustLitigationDetails LEGAL PROCEEDINGS - Antitrust Litigation (Details) Details 146 false false R147.htm 9955622 - Disclosure - LEGAL PROCEEDINGS - Intellectual Property Litigation (Details) Sheet http://www.bauschhealth.com/role/LEGALPROCEEDINGSIntellectualPropertyLitigationDetails LEGAL PROCEEDINGS - Intellectual Property Litigation (Details) Details 147 false false R148.htm 9955623 - Disclosure - LEGAL PROCEEDINGS - Product Liability Litigation (Details) Sheet http://www.bauschhealth.com/role/LEGALPROCEEDINGSProductLiabilityLitigationDetails LEGAL PROCEEDINGS - Product Liability Litigation (Details) Details 148 false false R149.htm 9955624 - Disclosure - LEGAL PROCEEDINGS - General Civil Litigation (Details) Sheet http://www.bauschhealth.com/role/LEGALPROCEEDINGSGeneralCivilLitigationDetails LEGAL PROCEEDINGS - General Civil Litigation (Details) Details 149 false false R150.htm 9955625 - Disclosure - LEGAL PROCEEDINGS - Completed or Inactive Matters (Details) Sheet http://www.bauschhealth.com/role/LEGALPROCEEDINGSCompletedorInactiveMattersDetails LEGAL PROCEEDINGS - Completed or Inactive Matters (Details) Details 150 false false R151.htm 9955626 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) Sheet http://www.bauschhealth.com/role/COMMITMENTSANDCONTINGENCIESDetails COMMITMENTS AND CONTINGENCIES (Details) Details http://www.bauschhealth.com/role/COMMITMENTSANDCONTINGENCIES 151 false false R152.htm 9955627 - Disclosure - SEGMENT INFORMATION - Narrative (Details) Sheet http://www.bauschhealth.com/role/SEGMENTINFORMATIONNarrativeDetails SEGMENT INFORMATION - Narrative (Details) Details 152 false false R153.htm 9955628 - Disclosure - SEGMENT INFORMATION - Segment Revenues and Profit (Details) Sheet http://www.bauschhealth.com/role/SEGMENTINFORMATIONSegmentRevenuesandProfitDetails SEGMENT INFORMATION - Segment Revenues and Profit (Details) Details 153 false false R154.htm 9955629 - Disclosure - SEGMENT INFORMATION - Revenues by Geographic Information (Details) Sheet http://www.bauschhealth.com/role/SEGMENTINFORMATIONRevenuesbyGeographicInformationDetails SEGMENT INFORMATION - Revenues by Geographic Information (Details) Details 154 false false R155.htm 9955630 - Disclosure - SEGMENT INFORMATION - Long-Lived Assets by Geographical Information (Details) Sheet http://www.bauschhealth.com/role/SEGMENTINFORMATIONLongLivedAssetsbyGeographicalInformationDetails SEGMENT INFORMATION - Long-Lived Assets by Geographical Information (Details) Details 155 false false R156.htm 9955631 - Disclosure - SEGMENT INFORMATION - Major Customers (Details) Sheet http://www.bauschhealth.com/role/SEGMENTINFORMATIONMajorCustomersDetails SEGMENT INFORMATION - Major Customers (Details) Details 156 false false R157.htm 9955632 - Disclosure - SUBSEQUENT EVENT (Details) Sheet http://www.bauschhealth.com/role/SUBSEQUENTEVENTDetails SUBSEQUENT EVENT (Details) Details http://www.bauschhealth.com/role/SUBSEQUENTEVENT 157 false false All Reports Book All Reports bhc-20251231.htm bhc-20251231.xsd bhc-20251231_cal.xml bhc-20251231_def.xml bhc-20251231_lab.xml bhc-20251231_pre.xml bhc-20251231_g1.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/cyd/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 true true